Power-operated hair-clipper



w. F. KOKEN AND-G. G. ANDERSON. POWER OPERATED HAIR CLIPPER.

APPLICATJON FILED APR.12. 1919- 1 ,37934150, Patented May 24L, 1921-.

EES

W'ALTER F. KOKEN AND GEORGE Gr. ANDERSON, OF ST. LOUIS, MISSOURI, ASSIGNOES T0 KOKEN BARBEBS SUPPLY COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF IVIISSOURI.

IOWER-OPERATED HAIR-CLIPPER.

Specification of Letters Patent.

Patented May 2a, 1921.

Application filed April 12, 1919. Serial No. 289,544.

T 0 aZZ whom it may concern.

Be it known that we, lVALrnn F. KoKEN and GEORGE Gr. ANDERSON, citizens of the United States, residing in the city of St. Louis, State of Missouri, have invented a certain new and useful Improvement in Power-Operated Hair-Clippers, of which the following is a full,'clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same. V

This invention relates to hair clippers of the type in which a flexible shaft, driven by an electric motor or other suitable means, is employed for actuating the movable cutter of the clipper.

One object of our invention is to provide an eflicient power operated clipper of simple design, in which all of the moving parts of the mechanism employed for actuating the movable cutter are completely hidden from view and are so arranged that the flexible drive shaft extends laterally from the body portion of the clipper at a point between the handle and the cutters, thereby enabling the clipper to be handled in the same manner as a hand operated clipper.

Another object is to provide a'compact, lightweight, power operated hair clipper that is quiet, free from excessive vibration and of such construction that the cutter actuating mechanism can be kept thoroughly lubricated, thereby producing a serviceable hair clipper that can be successfully operated by an electric motor. Other objects and desirable features of our invention will be hereinafter pointed out.

Figure l of the drawings is a top'plan View of a power operated hair clipper constructed in accordance with our invention.

Fig. 2 is a side elevational view of said clipper.

Fig. 3 is a vertical longitudinal sectional view, taken on the line 3-3 of Fig. 1.

Fig. 4 is a transverse sectional view, taken on the line 1-4 of Fig. 3; and

Fig. 5 is a sectional View, taken on the line 55 of Fig. 3. 4

Referring to the drawings, which illustrate the preferred form of our invention, A designates a drive shaft, preferably a flexible shaft that is driven by an electric motor (not shown), B designates the body portion of the clipper, C designates a handle that projects rearwardly from said body portion, Dv designates a stationary cutter that projects forwardly from the lower end of said body portion, and E designates a movable cutter arranged above the stationary cutter D and adapted to be reciprocated transversely of same. The operating mechanism for the movable cutter E is so constructed and arranged that the drive shaft A extends laterally from the clipper at a point between the handle C and the cutters, thereby enabling the operator to grasp the handle and manipulate the clipper in sub stantially the same manner that hand operated clippers are operated. Said operating mechanism comprises a shaft F journaled in bearings in the body portion B of the clipper and a disk -1 on the front end of said shaft equipped with an eccentrically-disposed pin 2 that projects into a block 3 which slides vertically in guideways 4 on a cutter actuating member G arranged at the rear of the movable cutter E, as shown in Fig. 3. Said movable cutter is guided by a pair of vertical posts 5 on the stationary cutter D that project upwardly through elongated slots 6 in the movable cutter, as shown in Fig. 1, and means of any preferred design is pro vided for guiding the cutter actuating mem ber G, the means herein shown consisting of horizontally-disposed portions 7 on the member G that project laterally through openings formed in parts '7 on the body portion B of the clipper, as shown in Fig. 5.

forth transversely of the body portion of the clipper, and thus cause the movable cutter E to reciprocate transversely of the stationary cutter D, said member G being connected in any preferred manner to said movable cutter, such, for example, as by means of an extension or forwardly projecting arm 8 on the member G that fits in a notch in the rear edge of the movable cutter E.

The movable cutter is pressed downwardly into engagement with the stationary cutter by means of a tension device consisting of a cap or housing member H that is mounted on the body portion B of the clipper in such a manner that the lower front edge of said cap H will bear against the top side Of the movable cutter E.

I a n i In the form of our invention herein illustrated the cap H is detachably connected to the body portion B by means of a screwthreaded. stud 9 on said body portion that tween the nut 10 and the cap H so as to cause said cap H'to exert suiiicient tension on the movable cutter to insure proper co operation between the movable cutter and the stationary cutter of the clipper. By turning the wing nut in one direction or the other the tension on the movable cutter can be varied. It will be noted, by referring to the drawings, that the cap H, in addition to acting as a tension device for the movable cutter of the clipper, also Serves as a housing for the cutter actuating member G and the parts on the shaft F that impart movement to the member G] The drive shaft A is detachably connected to a shaft 12 arranged in: the bodyportion B of the clipper at right angles to the shaft F and provided with a worm 13- that meshes with a worm gear 1 1 on the shaft "F, thereby forming a reduction gear between the drive shaft A and the shaft F of the cutter operating mechanism, which makes it 7 is provided with a portion 12 to which the rotating portiony of the drive shaft A is detachably connected, thereby enabling the drive shaft to be easily connected to or disconnected from the clipper. The worm 13 and worm gear 14 are arranged in a chamber 18 inthe body portion of the clipper that is adapted to be filled with a lubricating medium, which chamber is provided with a removable wall or portion formed by a bottom. plate 19 that is detachably con nected to the body portion of the clipper by screws 20, a shown in broken lines in Fig. 2. The handle 0 may be of any preferred shape, but we prefer to make said handle in the formv of a straight. loop which is provided at its right hand side with a laterally-projecting finger, stop 21 and at its left hand sidewith an inclined projection'22 that forms a stop or bearing surface forthe thumb of the person using the clipper, said thumb bearing 22 being arranged a slight distance in advance of the finger stop 21, as shown Fig. 1,

inadvance of the handle. can be operated", successfully by an electric A power operated clipper of the construction above descrlbed is light in weight; 1t is compact, all of the moving parts of the "cutter operating mechanism are hiddenfrom view, and it can be handled in practically the same manner as a hand operated clipper, due to the fact that the flexible drive shaft extends laterally from the clipper at a point Furthermore, it

motor without liability of causing the clipper to vibrate excessively, due to the fact that the power transmitted-from the drive shaft A to the movable cutter through a reduction gear and an operating shaft provided with an eccentrically disposed device which reciprocates a sliding member that is directly connected tothe movable cutter E. The worm andworm gear arepreferably formed of. steel, and as 'said parts. arekept thoroughly lubricated by the lubricating'medium in the chamber 18, .theclipper can be used for a long period without the necessity of renewing the moving parts of same.

Havingthus' described our invention, what we claim and desire to secure by Letters Patent, is

1. A power operated hair clippe'riprovided with abody portion, a movable cutter arranged at the front end of said'body portion, an operating mechanism for said movable cutter comprising a rotatable drive shaft that extends laterally or sidewise from saidbody portion at a point between said handle and movable cutter, and means Operated by said rotatable drive shaft for actuating said movable cutter.

2. A power operated hair clipper provided with a movable cutter, a handle for manipulating the clipper, and an operating mechanism for said movable cutter comprising a rotatable drive shaft extending laterally or sidewise from the clipper at a point in advance of said handle, and a, means interposedbetween said shaftand cutter for causing said cutter to reciprocate when said drive shaft rotates.

A power operated hair clipper, comprising a body portion, a stationarycutter carried by saidbody portion, a cooperating movable cutter, a. handle on said body portion provided on one side with a finger stop and at its opposite side with a thumb bearingarranged in advance of said'finger stop, and mechanism for actuating said movable cutter comprising a drive shaft that extends laterally or sidewise from said body portion at a point in proximity to said finger stop butin advance of same.

4. A power operated hair clipper, comprising a body portion providedwith a stationary cutter, va movable cutter, an operating shaft for said movable cutter journaled in said bodyv portion andextending longitudinally of same, and a cross shaft arranged at right angles to said operating shaft and provided with a worm that meshes with a worm gear on said operating shaft, said cross shaft being adapted to be connected to a flexible dr1ve shaft.

5. A power operated hair clipper, com prising a body portion provided with a stationary cutter, a movable cutter, an operating shaft for said movable cutter arranged longitudinally of said body portion, means for causing said movable cutter to reciprocate transversely of the stationary cutter when said operating shaft rotates, a cross shaft arranged in said body portion at right angles to said operating shaft, a ball thrust bearing for the inner end of said cross shaft, and a speed reduction means combined with said cross shaft and operating shaft.

6. A power operated hair clipper, comprising a stationary cutter, a movable cutter slidingly mounted on said stationary cutter, a cutter operating shaft arranged longitudinally of the clipper and provided at its front end with an eccentrically-disposed device, a transversely reciprocating actuating member connected to said movable cutter and provided with a guide-Way, a vertically sliding block in said guideway that receives the eccentrically-disposed device on said cutter operating shaft, a drive shaft arranged at an angle to said operating shaft, and a speed reduction means arranged between said shafts.

WALTER F. KOKEN. GEORGE G. ANDERSON. 

